Chevrolet EXPRESS - 2011 Manual page 290

If the vehicle has the Duramax
diesel engine, see the Duramax
diesel manual for more information.
The engine air cleaner/filter is
located near the center of the
engine compartment. See
for more information
on location.
Inspect the air cleaner/filter at the
scheduled maintenance intervals
and replace it at the first oil change
after each 80 000 km (50,000 mi)
interval. See
information. If driving in dusty/dirty
conditions, inspect the filter at each
engine oil change.
To inspect the air cleaner/filter,
remove the filter from the vehicle
and lightly shake the filter to release
loose dust and dirt. If the filter
remains covered with dirt, a new
filter is required. Never use
compressed air to clean the filter.
To inspect or replace the engine air
cleaner/filter, do the following:
1. Unhook the retainer clips and
remove the cover.
2. Lift the filter out of the engine air
cleaner/filter housing. Care
should be taken to dislodge as
for more
little dirt as possible.
3. Clean the engine air cleaner/
filter housing.
4. Inspect or replace the engine air
cleaner/filter. Make sure that the
filter fits properly into the
housing.
5. Reinstall the cover and fasten
the retaining clips.
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned.
(Continued)